Because of right timing, I managed to snap SBS539P and SBS5225L
on 243/198 since 198 will pass-by my doorstep.
When I had luck during that day, I could manage to spot the
'rare' cameos on 'live': SBS9311U on 243, TIB656R on 184, TIB657M
on 902, SMB134H on 856, TIB1014L on 187 and SBS9261E on 79 And I
managed to snap all of them as well.
Another day when I took SBS9391M on 198 home from work, I
happened to spot SMB132M on 178 on opp direction of Jurong Town
Hall Road. So, I decided to alight at Boon Lay Int instead since I
know it would reach Boon Lay later than 9391M reach BNL due to
distance.
If I got time, I can chase for that particular cameo after
getting the timings right. While waiting for the 'guest' to come, I
can also spot other cameos.